myChartActUser = echarts.init(document.getElementById('all_act_user_chart'));

optionActUser = {
    color:['#00E0FF', '#EA4D58'],
    series: [
        {
            name:'用户数',
            type:'pie',
            radius: ['50%', '70%'],
            avoidLabelOverlap: false,
            label: {
                normal: {
                    show: true,
                    position: 'center',
                    textStyle: {
                        fontSize: '20',
                        fontWeight: 'bold'
                    }
                }

            },
            data:[
                {value:28 },
                {value:72, name:'72%'}
            ]
        }
    ]
};
myChartActUser.setOption(optionActUser)